Chainlit#
Tip
Ploomber Cloud is a great platform to host your Chainlit apps, even Chainlit recommends us!
To deploy a Chainlit application in Ploomber Cloud you need:
A Ploomber Cloud account
A
DockerfileYour code
Dockerfile#
You need to provide a Dockerfile, you can use this template to get started. The template contains the minimal steps needed for a deployment but you need to modify so it installs any required dependencies and copies your code into the Docker image.
FROM python:3.11
COPY app.py app.py
RUN pip install chainlit
# do not change the arguments
ENTRYPOINT ["chainlit", "run", "app.py", "--host=0.0.0.0", "--port=80", "--headless"]
Testing locally#
To test your app, you can use docker locally:
# build the docker image
docker build . -t chainlit
# run it
docker run -p 5000:80 chainlit
Now, open http://0.0.0.0:5000/ to see your app.
Deploy#
Once you have all your files, create a zip file.
To deploy a Chainlit app from the deployment menu, follow these instructions:
Tip
To ensure your app doesn’t break on re-deployments, pin your dependencies.
Features#
Ploomber Cloud supports many features to help you build Streamlit applications quickly!
Integration with GitHub
Safely store secrets such as API keys
Add password protection to your app
Usage analytics such as unique visitors, total requests, etc.
Spin up larger resources (CPUs and RAM)
Spin up GPUs
Add custom domains or subdomains to your application
Task queues to scale applications to more users
Password protection#
Currently, our password authentication feature doesn’t work with Chainlit, however, we can still use Chainlit’s authentication feature.
First, download the sample code.
The Dockerfile remains the same, the only change happens in the app.py.
During deployment, you need to provide three secrets:
CHAINTLIT_USERNAME="user"
CHAINTLIT_PASSWORD="somepassword"
CHAINLIT_AUTH_SECRET="somerandomstring"
CHAINLIT_AUTH_SECRET is a random string used to authenticate user tokens, you can
generate one by executing the following command in your terminal:
python -c 'from secrets import token_hex; print(token_hex(16))'
Note
You can change CHAINLIT_AUTH_SECRET, but it’ll log out all your users.
